How To Do Battery Calibration Iphone. Leave the device for some time after it turns off. After the iPhone battery has run out we let it sit for about 6 to 8 hours.

You do not want to deal with your iPhone when the battery is only about 2 left. 10 solutions to fix phone battery drain fast. Up to 50 cash back Resetting the iPhone battery is probably the most convenient way to calibrate iPhone Battery and keep your phones battery in good condition.
Drain the iPhone Battery.
Answers I discovered were. Anything you see in the App Store professing to reset your iPhone battery is at best unnecessary and at worst a scam. If your iPhones charge lasts all day and has no perceivable charge issues you shouldnt calibrate because the calibration procedure consumes a full battery cycle. Drain the Battery Completely.

